[Zope] Management screen broken - error -5 returned instead

[Chuck Burdick (TT)]

The left frame "tree-view" of my management screen now has an error message,
rather than a tree.  

I was putzing around with adding/deleting packages in the Control Panel when
this happened.  Any suggestions?

Here's the message:
=======<Quoted>========
Zope has encountered an error while publishing this resource. 
Error Type: zlib.error
Error Value: Error -5 while decompressing data: []

Troubleshooting Suggestions
*	The URL may be incorrect. 
*	The parameters passed to this resource may be incorrect. 
*	A resource that this resource relies on may be encountering an
error. 
=======<Cut>========
=======<Quoted from HTML source>========

Traceback (innermost last):
  File /usr/local/zope/lib/python/ZPublisher/Publish.py, line 214, in
publish_module
  File /usr/local/zope/lib/python/ZPublisher/Publish.py, line 179, in
publish
  File /usr/local/zope/lib/python/Zope/__init__.py, line 201, in
zpublisher_exception_hook
    (Object: ApplicationDefaultPermissions)
  File /usr/local/zope/lib/python/ZPublisher/Publish.py, line 165, in
publish
  File /usr/local/zope/lib/python/ZPublisher/mapply.py, line 160, in mapply
    (Object: manage_menu)
  File /usr/local/zope/lib/python/ZPublisher/Publish.py, line 102, in
call_object
    (Object: manage_menu)
  File /usr/local/zope/lib/python/App/special_dtml.py, line 120, in __call__
    (Object: manage_menu)
  File /usr/local/zope/lib/python/DocumentTemplate/DT_String.py, line 502,
in __call__
    (Object: manage_menu)
  File /usr/local/zope/lib/python/TreeDisplay/TreeTag.py, line 154, in
render
    (Object: a tree tag)
  File /usr/local/zope/lib/python/TreeDisplay/TreeTag.py, line 219, in
tpRender
    (Object: ApplicationDefaultPermissions)
  File /usr/local/zope/lib/python/TreeDisplay/TreeTag.py, line 614, in
decode_seq
zlib.error: (see above)

=======<End Quoted>========

Thanks,
Chuck Burdick

chuck.burdick@tradingtechnologies.com
(847) 448-8495